Before I get started would you mind letting us know how you might have become infected? Everyone's been asking that question to try and avoid being hit.
Getting rid of the infection isn't that hard. Restoring files, on the other hand, is a b!t#h.
Before you proceed I would highly recommend cloning your existing drive and I will warn you chances of data retrieval are pretty slim with ransomware infection.
Do this and I will do a little research and get back later today. Again if your stuff is important mirror your current drive before you try anything at all.
YEAH YOU RIGH, RIGHT NOW IM GOING TO REMOVE ALL INFECTED FILES I WILL TRY TO REINSTALL OPERATING SYSTEMWell bad news. All you can do right now is take whatever you have left (did you mirror?) and hope and wait the authorities catch them. Many times they are able to obtain the method of decryption.
Until then I would do a complete wipe, forget everything and anything that touched the infected system for now.
Bad news yes but these folks are known for hiding goodies that morph making it almost impossible for the A/V anti-malware programs to keep up. Otherwise you just risk it happening again. Sorry.